2007-03-27 06:45:23 · 4 answers · asked by jennytheowl 1 in Science & Mathematics ➔ Astronomy & Space
Because of the rising heat. It's common in most explosions not just Nuclear ones.
2007-03-27 06:48:54 · answer #1 · answered by magicninja 4 · 0⤊ 0⤋
The hot rising air eventually reaches an altitude where the reduced density due to heat matches the reduced density due to altitude and it can not rise further, since material is still coming in behind it, it has to spread out. As much of the material is being carried in the air, as it cools it starts to fall, thus forming the downward curving outer edge like a mushroom. All big heat producing explosions and even intense local fires like a chemical fire or fuel tank do the same thing.
2007-03-27 07:19:33 · answer #2 · answered by Mike1942f 7 · 0⤊ 0⤋
a pair of human beings above already replied this answer properly. although, did you already know that if a nuclear explosion occurs in water (above the sea floor)or extreme in the ambience, the mushroom shaped cloud eminates outward from the two the coolest and backside of the explosion. the floor stops the mushroom cloud whilst something explodes the floor.
2016-12-08 12:31:42 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Besides the outward blast, the tremendous heat causes a massive thermal which causes the rising mushroom cloud like a massive convection current..
2007-03-27 06:54:45 · answer #4 · answered by Norrie 7 · 0⤊ 0⤋